First, let me clarify I bought my Tesla used, before Musk went full fascist, and autopilot came free. The car was updated to the newest hardware for free, since the original FSD equipment couldn't do it either.
That out of the way, FSD sucks, and it's getting worse, not better. When if first come out of beta it was okay. I remember describing it as driving with a teenager, they got the general idea, but would make bad decisions so you had to watch them. Years of updates later and it's practically unusable to me. It tries to go way under or over the speed limit, it hesitates or slams on the brakes for green lights. It slams on the brakes for cars that pull out with plenty of gap but doesn't even notice the risky merges. It can not seem to navigate intersections anymore, damn near stopping in the middle of a turn. It actually just updated yesterday and I tried it again, it took me less than 5 miles to disable it again. It is, in my opinion, a hazard to use. I talked to my partner about it and we both agree it didn't used to be this bad.
Anyway, the stupidest part of all this, is they changed it so it's either full self driving all the time or not. You want cruise while you're in traffic because you know it'll try to cut in front of someone? Silly idiot, no you don't. So you now have to have a second profile* for cruise control and lane keep without FSD. And the odd thing is that lane keep and cruise are fine. They function like FSD used to. They can drive the highway with no problem and trust me, I do not have much faith in the car so I'm watching it close. It can't navigate city streets, but neither can FSD....
TLDR, my car was a better deal for me than Tesla. After years of FSD access, it's bad and getting worse, not better. I can't believe people pay 5 figures for it and maybe that's why they feel the need to clip perfect drives or defend it.